Pipe coupling



Jan. 18, 1949. '7 H. B. L. NEWMAN PIPE COUPLING Filed April 12, i194?- 75 I/VVEA/TaZ- V b15418) saw/map 4554/5 A/En MHA/ Patented Jan. 18, 1949PIPE COUPLING Henry Bowford Leslie Newman, Rockhampton, Queensland,Australia Application April 12, 1947, Serial No. 741,045 In AustraliaOctober 11, 194.6

3 Claims. 1

The object of this invention is to provide an improved pipe couplingwhich will enable lengths of piping to be quickly coupled together, andwhich will enable a certain amount of angularity between the abuttingpipe ends.

The invention is particularly adapted for coupling lengths of pipingused in the irrigation of farms and the like where the pressure is notof a high order and provision has to be made for the quick location ofthe nipples so that time will not be required in making adjustments ofthe pipe lengths after the joints have been made.

The nature of the invention will be fully understood from the followingdescription taken in connection with the accompanying drawings wherein:

Figure 1 is a side elevation of two pipe ends with the invention appliedthereto in coupled attitude;

Figure 2 is an end elevation on the line B--B of Figure 1;

Figure 3 is a section on the line A--A of Figure 1;

Figure 4 is an elevation of the rigid retaining ring;

Figure 5 is a section on the line 0-0 of Figure 4;

Figure 6 is an elevation of the flexible rubber ring;

Figures 7 and 8 are end elevation and plan of the spring clamp; and

Figure 9 is a part side elevation of the invention with a modifiedspring clip.

on ring 4 has a tapped hole. A spring clamp 15 In the drawings likereference numerals de- A note the same parts in the difierent figures,and referring to Figures 1, 2 and 3, two adjacent ends of pipes I and 2are shown. One pipe end I has secured around it, by rivets 3 andsoldering, a ring 4 provided with a co-axial integral socket 5. Lugs 6are integral with the rim of said socket 5. A rigid retainer ring I witha concave seating 1a (see Figures 4 and 5) has lugs 8 matching with lugsB on socket 5, and a flexible rubber ring 9 (see Figure 6) with orwithout lugs I0 is secured between the rim of socket 5 and rigidretainer ring I by set screws II passed through holes in lugs 6 andscrewed into threaded holes in lugs 8. This assembly forms the femalesection of the coupling.

The male section consists of a rin l2 secured to a pipe end 2 by rivets3 and soldering. Ring 12 has integral with it a convex spigot flange l3adapted to mate with the concave seating Ia of ring 1 and to have itsend l3a projecting a short distance into socket 5 (see Figure 3). A bossI4 (see Figures 7 and 8) of somewhat D-shape lies upon the inner end ofa spring clip [6 with its legs on opposite sides thereof and of saidboss l4. A set screw ll passes through holes in said spring clamp l5,spring clip 15 and screws into the tapped hole in the boss l4. Springclip 16 is somewhat U-shaped and its free end I 8 is adapted to liebehind spigot flange l3 (see Figure 1) when the coupling is made.

Referring to Figure 9, i9 is a modified spring clip of somewhatelliptical shape and is of the same width as clip 16 (see Figure 2). Ahexagon-headed set screw 20 passes through a hole in one end 2| of saidclip I9 and screws into a tapped hole in boss I4. The other end 22 ofsaid clip I9 is hooked to lie inside the rear of convex spigot flange13.

In use the series of pipe lengths is laid with the female or socket endstowards the water supply. The joints are then made by raising the maleor spigot end of the pipe so that the end l8 of clip 16 will take itsplace behind the convex spigot flange l3 with the spigot and socketjoint loosely made. The whole length of piping is thus connected, and asthe combined pipe length is resting on the spigot flanges :3, at thebottom, there is considerable pressure exerted against the spring clipsIt at the top thus tending to bring the joints tightly together. Therubber rings 9 are not cramped between the convex spigot flange l3. andsocket 5 (see Figure 3) but remain in a free flexible condition upon theprojecting end I 3a of the convex spigot flange l3. When the water isforced through the coupled length of piping the pressure causes the saidrubber rings 9 to make a final seating against convex spigot flanges [3.It will be understood that the disposition of the male and femalesections may be reversed in laying a length of piping without afiectingthe efficiency of the joints or the flow of water.

Although a separate ring 1 is preferable and has been illustrated anddescribed, the seating la may be in the socket 5 with the flexible ring9 attached to the wall of said socket 5. The essence of the invention isin the provision of a flexible ring, such as a rubber ring 9, attachedat its outer periphery to the socket 5 with its inner periphery free tobe forced by the water pressure against the protruding end of the spigotflange I3 to prevent leakage, at the seating la, owin to thenon-rigidity of the joint and the quick assembly thereof. When thenipples upon pipes l and 2 are to be aligned, usually at the top of thepipe line, pairs of guides may be provided upon each flange l3 betweenwhich the ends 48 of spring clips !6 are located during the assembly ofthe pipe line.

I claim:

1. An improved pipe coupling consisting of a socket for attachment to anend of a pipe, said socket having, at its rim, a rigid ring providedwith a concave seating; and a spigot for attachrnent to the abutting endof an adjacent pipe, said spigot having a convex flange adapted to seatin the said ring; a flexible ring extending from said socket to the saidconvex flange; and a spring clip attached to said socket, thehookof saidclip adapted to lie behind the flange'on s'aid spigot when the couplingis assembled.

2. An improved pipe coupling as claimed in claim 1 wherein the saidrigid ring is separate from said socket and is secured thereto "by setscrews or the like with the outer periphery of 'said flexible' ringgripped between saidsocket rim and said rigid-ring.

-rigid ring.

'HENRY BOWFORD LESLIE NEWMAN.

REFERENCES CITED The following references are of record in the file ofthis patent 'UNITED STATES PATENTS Number Name Date 1,938,035 Mann Dec.5, 1933

